package com.sifa.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String paymentOk(Integer id){
        return "线程池:"+Thread.currentThread().getName()+"paymentOk  id:"+id+"O(∩_∩)O";
    }

    /**
       模仿3秒中的业务处理时间
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentError(Integer id)  {
       Integer time=5;
        try {
//            System.out.println(10/0);
            TimeUnit.SECONDS.sleep(time);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:"+Thread.currentThread().getName()+"paymentOk  id:"+id+"呜呜呜 耗时5秒";
    }

    public String paymentInfo_TimeOutHandler(Integer id){

  return  "线程池："+Thread.currentThread().getName()+"paymentInfo_TimeOutHandler,id"+id+"\t";
    }
    //服务熔断
    @HystrixCommand(fallbackMethod ="paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60")//失败率达到多少后跳闸
    })
     public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id<0){
            throw new RuntimeException("ID  不能为负数");
        }
        String serialNumber= IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号"+serialNumber;
     }
     public String paymentCircuitBreaker_fallback(@PathVariable("id")Integer id){

        return "id不能为负数,请稍后再试";
     }


}
